Rev. 2.00, 09/03, page 154 of 690
Area 0 (
CS0
)
H'00000000
H'20000000
H'40000000
H'60000000
H'80000000
H'A0000000
H'C0000000
H'E0000000
Internal I/O
Area 2 (
CS2
)
Area 3 (
CS3
)
Area 4 (
CS4
)
Area 5A (
CS5A
)
Area 6A (
CS6A
)
H'00000000
H'04000000
H'08000000
H'0C000000
H'10000000
H'14000000
H'18000000
Reserved area
Physical address space
Logical address space
Note: For logical address spaces P0 and P3, when the memory management unit (MMU) is on, it can
optionally generate a physical address for the logical address. This figure can be applied when
MMU is off and when the MMU is on and each physical address for the logical address is equal
except for higher three bits. When translating a logical address to a physical address, refer to
table 7.2.
P0
P1
P2
P3
P4
Area 5B (
CS5B
)
Area 6B (
CS6B
)
H'16000000
H'1A000000
H'1BFFFFFF
Figure 7.2 Address Space
7.3.2
Memory Bus Width
The memory bus width in this LSI can be set for each area. In area 0, external pins can be used to
select byte (8 bits), word (16 bits), or longword (32 bits) on power-on reset. The correspondence
between the external pins (MD3, MD4) and memory size is listed in the table below.
Table 7.3
Correspondence between External Pins (MD3 and MD4) and Memory Size
MD4
MD3
Memory Size
0
Setting prohibited
0
1
8 bits
0
16 bits
1
1
32 bits
For areas other than area 0, byte, word, and longword may be chosen for the bus width using
CSnBCR that can be set in each area. The bus width that can be set differs according to a
connected interface. For more details, see the CSn Bus Control Register.
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